Exploration of large-span steel box-concrete composite continuous rigid frame bridges
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Bibliographic Details
| Author(s): |
Hong Xiang
Zhixiang Zhou |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas, Venice, Italy, 22-24 September 2010 | ||||
| Published in: | IABSE Symposium Venice 2010 | ||||
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| Page(s): | 712-713 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2010 | ||||
| DOI: | 10.2749/222137810796063382 | ||||
| Abstract: |
Based on the existent study of prestressed concrete (PC) continuous rigid frame bridges and steel- concrete composite bridges, a new type of steel box-concrete composite continuous rigid frame bridge (SBCB) constructed by cantilever means is proposed in this paper. Analysis of an exemplary 245m-span bridge design justifies the feasibility and reasonability of SBCB which can fully make use of the respective material advantages of steel and concrete and effectively decrease the main beam self weight, enabling relatively smaller substructure sizes but much larger spanning ability. In addition, SBCB is basically robust against the usual defects of harmful excessive deflection due to concrete cracking and creeping. With the same quantity of overall steel use, SBCB can save 75% of the concrete quantity compared to the traditional PC continuous rigid frame bridge. |
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| Keywords: |
composite structure stress analysis cantilever construction continuous rigid frame bridge
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